JERUSALEM (JTA) — An 1,800-year-old Byzantine-era Roman mosaic bearing an inscription in ancient Greek was discovered at a national park in Israel.

The multicolored mosaic was unearthed in Caesarea National Park during an archaeological excavation as part of a conservation and reconstruction project by the Israel Antiquities Authority and the Caesarea Development Corp., in cooperation with the Israel Nature and Parks Authority.

The dig, part of reconstruction work on a Crusaders-era entrance bridge to Caesarea and the construction of a promenade for visitors, uncovered part of a large, opulent building dating back 1,500 years to the Byzantine period. Archaeologists discovered the mosaic under the Byzantine-era structure, likely used for commerce and social events, from an even earlier building dating back about 1,800 years, the Antiquities Authority said in a statement.

The mosaic, which is 11 1/2 feet by 26 feet, “is of a rare high quality,” Peter Gendelman and Uzi ‘Ad, directors of the excavation for the Israel Antiquities Authority, said in a statement. “It features three figures, multicolored geometric patterns and a long inscription in Greek, which were damaged by the Byzantine building constructed on top of it. The figures, all males, wear togas and apparently belonged to the upper class,”

They said it is not known who the figures represent; it may depend on what the building was used for.